/* Reset and body */
body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f9;
  margin: 0;
  padding: 20px;
  color: #333;
}
  
h1 {
  text-align: center;
  color: #007bff;
}

/* Main container */
.container {
  max-width: calc(100% - 100px);
  margin: 0 auto;
  background: #fff;
  padding: 25px 30px;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12);
  border-radius: 10px;
}

/* Top bar holding study program and start year */
.top-bar {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

/* Each column (study program, start year) */
.top-bar > div {
  flex: 1 1 1px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.top-bar label {
  display: inline-block;
  font-weight: 600;
  color: #007bff;
  white-space: nowrap;
}

/* Years container holds all year columns */
.years-container {
  display: flex;
  gap: 15px;
  justify-content: space-between;
  margin-bottom: 15px;
  flex-wrap: wrap;
}

/* Each year column styling */
.year-column {
  flex: 1 1 10px;
  background: #f9fbff;
  padding: 20px 18px;
  border-radius: 8px;
  box-shadow: inset 0 0 8px rgba(0, 123, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.year-column h2 {
  margin: 0 0 12px 0;
  color: #0056b3;
  font-weight: 700;
  font-size: 20px;
  text-align: center;
}

/* Button container styling */
.button-container {
  text-align: center;
}

.fixed-top-left {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 1000;
  margin-top: 0;
}
  
.big-button {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 20px;
  background-color: #2c7be5;
  color: white;
  font-weight: 600;
  font-family: Arial, sans-serif;
  font-size: 16px;
  border: none;
  border-radius: 6px;
  box-shadow: 0 2px 5px rgba(44,123,229,0.4);
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.big-button:hover {
  background-color: #1a5fcc;
  box-shadow: 0 4px 10px rgba(26,95,204,0.6);
}

/* Responsive tweaks */
@media (max-width: 600px) {
  .top-bar {
    flex-direction: column;
  }
  .years-container {
    flex-direction: column;
  }
  .year-column {
    width: 100%;
    min-width: unset;
  }
}